A brief analysis of the development trend of medium frequency induction annealing equipment

The application of medium frequency induction annealing equipment is becoming more and more widespread, and many heat treatment manufacturers use this equipment to heat treat workpieces. As the scope of applications continues to expand, its manufacturing technology is also being updated. Today, let’s take a look at the development trends of medium frequency induction annealing equipment.

The development trends of medium frequency induction annealing equipment are as follows:

1) The main circuit power switching devices are self-shutdown, modular, integrated and intelligent; the switching frequency continues to increase and switching losses are further reduced.

2) 6-pulse rectifiers are often used for low-voltage and small-capacity devices, while 12-pulse and 24-pulse rectifiers are used for medium-voltage and large-capacity devices to reduce harmonic interference to the power supply system and electromagnetic radiation to surrounding electronic equipment. interference.

3) The advancement of microprocessors has made digital control the development direction of modern controllers. In recent years, major companies in my country and abroad have launched DSP-based cores, equipped with required peripheral functional circuits, which are called DSP monolithic controllers integrated in a single chip. The price is greatly reduced and the size is reduced. Compact structure, convenient use and improved reliability. Compared with ordinary microcontrollers, DSP has 10-15 times greater digital processing capabilities, ensuring that the system has superior control performance. Digital control simplifies hardware, and various intelligent control algorithms will greatly improve control performance, realize complex control rules, and make the application of modern control theory in control systems a reality. It is easy to connect to upper-layer systems for data transmission, and is convenient for Fault diagnosis, enhanced protection and monitoring functions, thereby improving the intelligence level of the system.

4) The large-capacity technology of medium-frequency induction annealing equipment can be divided into two categories from a circuit perspective: one is the series and parallel connection of devices, and the other is the parallel connection of multiple devices. In the series and parallel connection of devices, the voltage sharing problem of series devices and the current sharing problem of parallel devices must be carefully dealt with.